Yarn clearer



Nov. 27, 1923. 1,475,814

D; GRAVEL ARN'CLEARER Filed Aug. 21. 1922 David Gravel Patented Novo 27, 1923.

DAVID GBAVEL, F CHAT'IANQOG-A, TENNESSEE, ASSIGNOR TO THE STANDARD- COQSA-TEATCHER COMP, 0F GHATTANOOGA, TENNESSEE, A CORPORATION 01! TENNESSEE YARN CLEARER.

Application filed August 21, 1922. Serial No. 583,825.

To all whom it may concern:

Be it known that 1, DAVID Graven, a citizen of the United States, residing at Chat? tanooga, in the county of Hamilton and a State of Tennessee, have invented certain new and useful Improvements in Yarn Clearers, of which the following is a specification.

My said invention relates to a yarn clearer 1a and it is an object of the invention to provide means which shall effectually detect all slubs and the like in the yarn and enable the operative to remove defective parts prior to spooling. In the device of my present invention I have provided means to insure that the yarn will maintain its line of travel through the different parts whereby discover of all defective places is insured.

A further object of the invention is to provide quick and accurate means for adjusting the position of the comb relatively to the yarn support beneath it.

Still another object of the invention is to provide an improved tension washer and guiding'means to locate the yarn therein.

A further object of the invention is to provide means for guiding the thread quickly underneath the tension washer.

Referring to the accompanying drawings, which are made a part hereof and on which similar reference characters indicate similar parts,

Figure 1 is a plan of my device,

Figure 2 an end elevation thereof,

Figure 3 a. side view of the comb and connected parts, and

Figure a an end view of the comb illustrating the pivotal connection between the comb and its support.

In the drawings reference character indicates a supporting bar on which any convenient number of yarn clearing and tension devices may be mounted, clamped in place thereon by screws 11. One member of each device comprises a bracket 12 having at one side a projecting member 13 in the form of a bar having a flat upper face providing a yearn rest and bent downward at one end as shown at 14 in Figure 3. A cylindrical bar or wire 15 also projects from thee ame side of the bracket alongside slightly below the upper face of the bar 18 and has a bent portion 18 at the outer end. A eombmrrier 17 is pivotally they being connected to the bracket by a pin 18 and carries a set screw 19 with a lock nut 20 for determining the position of the comb carrier. A comb plate 21 is fixed to the comb carrier by means of a bolt 22 and the comb plate may. have a. slotted vertical adjustment on the comb carrier but in its preferred form is merely fixed in place by the bolt. The comb plate has a rearward projection at 23 for moving it up and down on the comb carrier when the plate is made adjustable. At its lower end the plate has a series of comb teeth 24.

The pivotal movement of the comb carrier is limited by an inclined surface on the bracket at 25 adapted to engage a surface on the bracket here indicated as fiat and vertically extended. The other main portion of my improved device comprises a bracket 26 and a bent arm 27 secured thereto by the screw 11. As will be evident from consideration of the drawings the arm, which will ordinarily be made from sheet metal, is bent so as to bring a portion 28 having a flat and preferably substantially horizontal upper surface in front of the comb and substantially on a level there with. On the ledge 28 there is supported a screw 29 extending through central openings in a pair of tension washers 30 and 31 which are freely movable thereon. The lower of these washers is thin and has a flattened under surface and a rounded upper surface. The use of this lower washer avoids the difficulty frequently encountered in devices of this type, where a yarn passes beneath a tension washer, that the yarn in time wears a oove in the support beneath the washer, w ich thereupon loses its function. The upper washer 1s of smaller diameter but is heavier and thicker and has a fiat upper surface and a rounded lower surface.

At its front end the ledge 28 is cut away to provide a long narrow projection 32 which is bent laterally underneath the main body of member 28 and is spaced therefrom. This construction provides a guide eye or yarn trap for the yarn which may be very readily threaded and will not become unthreaded except on breakage or failure of the yearn. At one side the member 28 has another yarn guide 33 which comprises a lateral projection heat upward and over and having its and between the washers, then down upon the v inclined face 14 of the rest 13 and laterally between the rest and the body portion of the wire 15. At this stage in the proceedings the comb will be preferably slightly elevated to admit the yarn underneath it. In this connection the guide 33 may serve another useful function, since it extends close to the side of washer 31' and nearly to the upper edge of washer 30. As will be understood the washers rotate, the under one slowly and the upper one faster. Any fiufi dragged 0% the yarn will be carried away by rotation of the washers and may be dragged away from them by guide 33. To assist in this action I may incline theledge 28 toward the guide 33 whereby also such detached matter will tend to fall oil the ledge.

I am aware of earlier constructions in which adjustment has been made by"loo ening the bolt 22 and sliding the comb plate on the comb support. In my device I have provided however, an adjustment which is both quicker and more accurate than this, as well as finer. Such adjustment may be made quickly by loosening the nut 20 and turning set-screw 19 in one direction or the other according to whether the comb teeth are to move toward or away from bar 13. The flat top of this bar is of assistance in making quick adjustments as the variation of distance between the comb teeth and the fiat bar can be more readily determined than the distance between such teeth and a round bar. When a gauge is inserted endwise between a round bar and a comb it tilts sidewise easily and as there i but one proper line of contact on the rod for "the gauge this makes it difficult for the operative to determine the correct adjustment; particularly so, since the operative should stand at the front of the machine and guard against endwise tilting of the comb in prior constructions while adjusting the comb toward and from the rod. On a fiat face the gauge can readily be located properly and the ivotal adjusting means of my device not on y renders endwise tilting of the comb impossible after the first adjustment, but also makes the adjusting process expeditious since the comb is at all times fixed in adjusted posi tion relatively to the travel of the yarn. The variation of actual distance between the comb and the flat face is very gradual and therefore adjustment is more accurate.

- This is of help too in case the bar is out of line with the pivot of the comb, since there is not such .a large difierence 1n the distance between the bar and the opposite ends of the comb after any read'ustment. In other constructions of which am aware such adjustment can be made only by a skilled mechanic, whereas in mine. it may be made by an ordinary laborer.

It will be obvious to those skilled in the art that various changes may be made in my device without departing from the spirit of the invention, the true scope of which is shown in the appended claims.

Having thus fully described my said invention, what I claim as new and desire to secure by Letters Patent, is:

l. A yarn clearing device comprising, a relatively long and narrow comb extending across the path of travel ofthe yarn, a supporting bar for the yarn beneath the comb and parallel thereto, a pivot for the comb parallel to said bar and comb said bar having a fiat face neat to the comb teeth, and

means for adjusting the comb on its pivot, substantially as set forth.

2. A yarn clearer comprising a bracket, a bar attached thereto having a fiat upper face providing a rest for the yarn, a comb pivoted on said bracket upon a pivot parallel to said comb and bar the comb having a single row of teeth, anda set-screw carried by the comb bearing at its end against a fixed part of the device for adjusting the comb about its pivot to vary its distance from said rest, substantially as set forth.

3. A yarn clearing and tension device comprising a supporting bar, a pair of clamps engaging the bar, a screw-bolt holding said clamps together, yarn clearing means on one clamp and a yarn tension device secured to the other by said screwbolt the clearing means and the tension device each having a yarn supporting surface above the upper level of'said supporting bar, substantially as set forth.

4. In a yarn clearing" and tension device, a supporting bar, apair of clamps engaging said bar said clamps having vertical engaging faces, a bolt connecting said clamps, yarn clearing means extending upward above the bar from one clamp, and a device on the other including a yarn tensioning means approximately on a level with the yarn clearer, a shelf supporting said means, and a bracket having spaced parallel limbs one supporting the shelf and the other socured to the clamps by said connecting bolt, substantially as set forth.

In witness whereof, I have hereunto set my hand and seal at Chattanooga, Tennessee, this; 17th day of August, A. D. nineteen hundred and twenty-two.

DA D GRAVEL. [11. 5.] Witnesses SHANNONM. GAMBLE,

RD! E. Burma. 

